Members of the Columbia Reconstruction Project Team check out a piece of Columbia debris newly arrived from Barksdale Air Force Base, Shreveport, La. Inside the RLV Hangar, the team is identifying pieces and placing them on a floor grid in a configuration of the orbiter. The team will attempt to reconstruct the bottom of the orbiter as part of the investigation into the accident that caused the destruction of Columbia and loss of its crew as it returned to Earth on mission STS-107. To date, 35,319 pieces have been shipped to KSC; 1,218 are identified and placed on the grid.